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Browsing Thesis by Subject "Agricultural Biochemistry"

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    Techonofeasibility of on farm reservoirs in Bhilwara district
    (MPUAT, Udaipur, 2012) Mhetre, Punam; Bhakar, S. R.
    Water is an essential resource, to feed the rapid growing population and improving living standards. The pressure on available water resources is increasing and per capita availability is reducing day by day. Water harvesting is a traditional water management technology to insure recurrent droughts and future water scarcity in many arid and semi arid regions of world. Though farmers of the Bhilwara region are using Nadi system for water harvesting, but no scientific study was conducted earlier in this region on Nadi system. Therefore an attempt has been made to conduct study on ‘Techno feasibility of on farm reservoirs in Bhilwara district’. Daily rainfall data for period of 30 years (1981-2010) for Suwana, Shahapura and Baneda Panchayat Samitis was used to analyze the probability distribution using Webull’s technique and annual rainfall was recorded for Suwana (69.92 mm) and Baneda (59.97 mm) at 80 per cent probability and Shahapura (147 mm) at 70 per cent probability. The runoff generating capacity of the watershed was estimated by SCS curve number method and found to be 78807.50 m3 (Suwana), 52095 m3 (Shahapura) and 55929 m3 (Baneda). For Suwana and Baneda Panchayat Samiti polynomial model was found to be good and for Shahapura Panchayat Samiti Logarithmic model was found to be good. Efforts was also made to estimate the capacity of Nadi by topographic survey and following results were obtained; 43247.83 m3 (Suwana), 15468.26 m3 (Shahapura) and 15468.26 m3 (Baneda). In west weir designing crest length of Sidadiyas Nadi should be 0.92 and height should be 0.4 m, length Chalaniya Nadi should be 1.070 m and height should be 0.3 m and length Baran Nadi should be 0.89 m and height should be 0.3 m. Results revealed that at the three selected Nadis are under designed. Thus capacity of traditional Nadis can be increased to store available runoff in the Nadis. In embankment designing required height of embankment for Sidadiyas, Chalaniya and Baran should be 4.25 m, 5.50 m and 3.67 m respectively. Benefit cost ratio was found to be 2.51:1 (Suwana Panchayat Samiti), 2.40:1 (Shahapura Panchayat Samiti) and 2.51:1 (Baneda Panchayat Samiti).